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Ubuntu 14.04 LTS : Linux kernel (Xenial HWE) vulnerability (USN-3128-2)

medium Nessus Plugin ID 94734

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 14.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-3128-2 advisory.

 - The proc_keys_show function in security/keys/proc.c in the Linux kernel through 4.8.2, when the GNU Compiler Collection (gcc) stack protector is enabled, uses an incorrect buffer size for certain timeout data, which allows local users to cause a denial of service (stack memory corruption and panic) by reading the /proc/keys file. (CVE-2016-7042)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected kernel package.

See Also

https://ubuntu.com/security/notices/USN-3128-2

Plugin Details

Severity: Medium

ID: 94734

File Name: ubuntu_USN-3128-2.nasl

Version: 2.11

Type: local

Agent: unix

Published: 11/11/2016

Updated: 1/9/2024

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2016-7042

CVSS v3

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 5.4

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-47-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-47-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-47-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-47-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-47-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-47-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-47-powerpc64-smp, cpe:/o:canonical:ubuntu_linux:14.04:-:lts

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 11/11/2016

Vulnerability Publication Date: 10/16/2016

Reference Information

CVE: CVE-2016-7042

USN: 3128-2